The Japanese martial art of wielding as kusarigama, (a chain sickle).

kayakujutsu

naginatajutsu

(mathematics) A Chinese system of algebra for polynomial equations created in 13th century

Kyūjitai form of 学術

shuriken technique

black magic

a blanket term for various styles of Japanese hand-to-hand martial arts, either wholly unarmed or using short weapons / jujutsu / short for 武神館武道体術(ぶじんかんぶどうたいじゅつ) (Bujinkan Budō Taijutsu)

杖術: a traditional Japanese martial art using a shortened staff, also known as 杖道 (じょうどう, jōdō)

also known as 杖道 (jōdō), a traditional Japanese martial art using a shortened staff: a kind of stick fighting